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Borrowing Arrangements (Components Of Long-Term Debt) (Details) - USD ($) $ in Millions | Sep. 30, 2019 | Sep. 30, 2018
--- | --- | ---
Unsecured Debt | $ 452.1 | $ 451.6
Debt Issuance Costs, Net | (6.3) |
Current portion of long-term debt | (0.9) | (0.7)
Long-term debt, excluding current maturities | 445.4 | 444.3
Revolving Credit Facility [Member] |  |
Unsecured Debt | 0.0 | 0.0
Debt Issuance Costs, Net | (0.5) |
Secured Debt [Member] |  |
Debt Issuance Costs, Net | (5.8) | (6.6)
Other [Member] |  |
Unsecured Debt | 2.1 | 1.6
Unsecured Debt [Member] |  |
Unsecured Debt |  | 450.0
5.5% Senior Notes | 450.0 | $ 450.0
Debt Issuance Costs, Net | $ (5.8) |

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